PIC17C762-16/PT - 8-bit OTP MCU, 16KB EPROM, 66 I/O TQFP-80 | Microchip
Référence : PIC17C762-16/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.2 | $132,00 |
| 100 | $11.85 | $1 185,00 |
| 500 | $10.5 | $5 250,00 |
| 1 000 | $9.25 | $9 250,00 |
PIC17C762-16/PT Présentation
An OTP microcontroller (One-Time-Programmable microcontroller) is a non-volatile program-memory MCU whose EPROM cells can be written exactly once during production programming, then retain their bit pattern for the lifetime of the part. OTP sits in the microcontroller taxonomy between mask-ROM MCUs (cheapest, programmed at the fab) and flash MCUs (rewritable for field upgrades); OTP MCUs are favored for high-volume mature products where firmware is stable and production tooling costs favor factory programming. Within Microchip's lineup, PIC17C762 belongs to the PIC17C family of 8-bit RISC microcontrollers, which in turn sits above PIC16C and below PIC18 in performance and peripheral count.
Key features of the PIC17C762-16/PT include its high-performance Harvard RISC architecture with only 58 single-word instructions, single-cycle instruction execution (except program branches and table reads/writes which are two-cycle), a wide 4.5 V to 5.5 V supply range, an external clock input up to 33 MHz, and built-in brown-out / power-on reset and watchdog timer. The internal 10-bit A/D converter supports multiple channels for mixed-signal embedded designs. Industrial-grade operation is supported through the -40C to +85C commercial/industrial range (per the PT suffix family). The 80-pin TQFP package exposes 66 I/O pins, leaving 14 pins for power, ground, oscillator, MCLR, and programming functions.
Architecturally, the PIC17C762 separates program memory (16 KB OTP EPROM) from data memory (678 bytes RAM + 16-level hardware stack), allowing the 16-bit instruction word to coexist with an 8-bit data path. The single-cycle hardware multiplier accelerates arithmetic operations common in motor control and instrumentation, while the peripheral set supports both event-driven (timer/capture) and communications (USART) workloads.
Typical applications include industrial control panels, motor drive controllers, instrumentation front-ends, sensor conditioning with on-chip A/D, low-cost data acquisition terminals, and any high-volume embedded design that benefits from one-time factory programming of stable firmware. Compared with newer flash-based PIC18F8520, the PIC17C762-16/PT targets production runs where firmware stability eliminates the need for field re-programmability.
When designing with this part, note that OTP memory cannot be erased or rewritten; firmware bugs are unrecoverable in the field. Ensure a stable, well-regulated 5 V supply and follow Microchip's PIC17C programming specifications for in-circuit or socket programming using the ICSP interface. A newer recommended device per Microchip is the PIC18F8520, which adds flash memory and improved peripherals while remaining software-compatible at the architectural level.
Alternatives de remplacement direct pour PIC17C762-16/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC17C762-16/PT (même facteur de forme et même empreinte) — différant par Core Architecture, Package, Data Bus Width, Instruction Cycle Time, Maximum Clock Frequency.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C762-16I/PT
✅ Remplacement direct✓ En stock
$10.05 / unité
Voir la fiche technique →PIC17C762-16E/PT
✅ Remplacement direct✓ En stock
$10.4 / unité
Voir la fiche technique →PIC17C762T-16I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC17C762T-16/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC17C762-16E/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$10.4 / unité
Voir la fiche technique →PIC17C762-16/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit RISC Harvard |
| Program Memory Type | OTP EPROM (One-Time-Programmable) |
| Program Memory Size | 16 KB (16 K x 16 words) |
| RAM Size | 678 bytes |
| Largeur du bus de données | 16-bit (instruction) / 8-bit (data) |
| Fréquence d'horloge maximale | 33 MHz (external) |
| Instruction Cycle Time | 121 ns (single-cycle for most instructions) |
| MIPS Performance | 8.25 MIPS |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| Number of I/O Pins | 66 |
| A/D Converter | 10-bit, multi-channel |
| Hardware Multiplier | 8-bit x 8-bit, single-cycle |
| Number of Instructions | 58 single-word instructions |
| Boîtier | TQFP-80 (PT), 12x12 mm, surface mount |
| Plage de température de fonctionnement | 0C to +70C (Commercial) |
| Type de montage | Surface Mount (Gull Wing) |
| Statut RoHS | Contains lead (pre-RoHS process); non-compliant for new designs |
Configuration des broches de PIC17C762-16/PT
| Broche 1 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Broche 2 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Broche 3 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Broche 4 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Broche 5 | RA4/AN4 — Port A bit 4 / analog input 4 |
| Broche 6 | RA5/AN5 — Port A bit 5 / analog input 5 |
| Broche 7 | AVDD — Analog supply voltage |
| Broche 8 | AVSS — Analog ground |
| Broche 9 | OSC1 — Oscillator input |
| Broche 10 | OSC2 — Oscillator output |
| Broche 11 | MCLR — Master clear reset (active low) |
| Broche 12 | VPP — Programming voltage input |
| Broche 13 | RB0/INT — Port B bit 0 / external interrupt |
| Broche 14 | RB1 — Port B bit 1 |
| Broche 15 | RB2 — Port B bit 2 |
| Broche 16 | RB3 — Port B bit 3 |
| Broche 17 | RB4 — Port B bit 4 |
| Broche 18 | RB5 — Port B bit 5 |
| Broche 19 | RB6 — Port B bit 6 |
| Broche 20 | RB7 — Port B bit 7 |
| Broche 21 | VDD — Digital supply voltage (+5V) |
| Broche 22 | VSS — Digital ground |
| Broche 23 | RC0 — Port C bit 0 |
| Broche 24 | RC1 — Port C bit 1 |
| Broche 25 | RC2 — Port C bit 2 |
| Broche 26 | RC3 — Port C bit 3 |
| Broche 27 | RC4 — Port C bit 4 |
| Broche 28 | RC5 — Port C bit 5 |
| Broche 29 | RC6 — Port C bit 6 |
| Broche 30 | RC7 — Port C bit 7 |
| Broche 31 | RD0 — Port D bit 0 |
| Broche 32 | RD1 — Port D bit 1 |
| Broche 33 | RD2 — Port D bit 2 |
| Broche 34 | RD3 — Port D bit 3 |
| Broche 35 | RD4 — Port D bit 4 |
| Broche 36 | RD5 — Port D bit 5 |
| Broche 37 | RD6 — Port D bit 6 |
| Broche 38 | RD7 — Port D bit 7 |
| Broche 39 | VDD — Digital supply voltage (+5V) |
| Broche 40 | VSS — Digital ground |
| Broche 41 | RE0 — Port E bit 0 |
| Broche 42 | RE1 — Port E bit 1 |
| Broche 43 | RE2 — Port E bit 2 |
| Broche 44 | RE3 — Port E bit 3 |
| Broche 45 | RE4 — Port E bit 4 |
| Broche 46 | RE5 — Port E bit 5 |
| Broche 47 | RE6 — Port E bit 6 |
| Broche 48 | RE7 — Port E bit 7 |
| Broche 49 | RF0 — Port F bit 0 |
| Broche 50 | RF1 — Port F bit 1 |
| Broche 51 | RF2 — Port F bit 2 |
| Broche 52 | RF3 — Port F bit 3 |
| Broche 53 | RF4 — Port F bit 4 |
| Broche 54 | RF5 — Port F bit 5 |
| Broche 55 | RF6 — Port F bit 6 |
| Broche 56 | RF7 — Port F bit 7 |
| Broche 57 | VDD — Digital supply voltage (+5V) |
| Broche 58 | VSS — Digital ground |
| Broche 59 | RG0 — Port G bit 0 |
| Broche 60 | RG1 — Port G bit 1 |
| Broche 61 | RG2 — Port G bit 2 |
| Broche 62 | RG3 — Port G bit 3 |
| Broche 63 | RG4 — Port G bit 4 |
| Broche 64 | TX/CK — USART transmit / clock |
| Broche 65 | RX/DT — USART receive / data |
| Broche 66 | T0CKI — Timer 0 clock input |
| Broche 67 | T1CKI — Timer 1 clock input |
| Broche 68 | CCP1 — Capture/Compare/PWM 1 |
| Broche 69 | CCP2 — Capture/Compare/PWM 2 |
| Broche 70 | SS — SPI slave select |
| Broche 71 | SDO — SPI data out |
| Broche 72 | SDI — SPI data in |
| Broche 73 | SCK — SPI clock |
| Broche 74 | VDD — Digital supply voltage (+5V) |
| Broche 75 | VSS — Digital ground |
| Broche 76 | RH0 — Port H bit 0 |
| Broche 77 | RH1 — Port H bit 1 |
| Broche 78 | RH2 — Port H bit 2 |
| Broche 79 | RH3 — Port H bit 3 |
| Broche 80 | RH4 — Port H bit 4 |
Applications typiques
PIC17C762-16/PT convient pour 6 applications: Industrial Control Panels, Motor Drive Controllers, Sensor Instrumentation Front-Ends, Data Acquisition Terminals, Security and Access Control Systems, White Goods and Appliance Controllers.
Industrial Control Panels
The PIC17C762-16/PT is well suited to industrial control panels where stable, mature firmware drives keypads, LED indicators, relay outputs, and discrete I/O. Its 66 I/O pins handle multiple HMI inputs and outputs without external expanders, while the 10-bit on-chip ADC reads analog setpoints (temperature, pressure, voltage) directly. The Harvard RISC core's deterministic single-cycle instruction execution (121 ns) ensures predictable response times for real-time control loops, and the 4.5-5.5 V supply matches common industrial 5 V backplanes. OTP memory guarantees firmware integrity against accidental field reprogramming in deployed equipment.
Recommandé
Motor Drive Controllers
The PIC17C762-16/PT's 8-bit single-cycle hardware multiplier accelerates the PID and vector-control math used in brushed and stepper motor controllers, while its 33 MHz clock delivers 8.25 MIPS for real-time commutation. The capture/compare/PWM peripherals generate motor-drive waveforms with low software overhead, and the 10-bit ADC samples motor current/voltage feedback in synchronous timing. OTP memory suits high-volume motor products with stable firmware. For higher-performance BLDC/FOC drives, consider migrating to dsPIC33E devices, but for cost-sensitive brushed/stepper applications the PIC17C762 remains a strong fit.
Recommandé
Sensor Instrumentation Front-Ends
Instrumentation front-ends benefit from the PIC17C762-16/PT's on-chip 10-bit ADC and 66 I/O pins, which allow direct connection to multiple analog sensors (thermocouples via amplifier, RTDs, strain gauges) and digital sensors. The hardware multiplier speeds scaling and linearization calculations, while the 678-byte RAM accommodates moving-average filters and calibration tables. The deterministic 121 ns instruction cycle supports consistent sampling intervals essential for measurement accuracy. OTP memory locks calibrated firmware into production units.
Recommandé
Data Acquisition Terminals
Low-cost data acquisition terminals use the PIC17C762-16/PT to read multiple analog channels via the 10-bit ADC, buffer samples in 678-byte RAM, and transmit results over USART to a host PC or PLC. The 16 KB OTP program memory holds acquisition routines, calibration coefficients, and a simple command interpreter. Industrial-grade I/E variants operate over -40C to +85C/+125C for factory-floor deployment. For higher-channel-count applications, the PIC17C762's 66 I/O enable direct multiplexing without external logic.
Recommandé
Security and Access Control Systems
The PIC17C762-16/PT is a fit for security keypads, RFID readers, and access-control panels where its 66 I/O pins drive 4x4 matrix keypads, status LEDs, and door-lock relays, while the on-chip ADC monitors backup battery voltage. OTP memory prevents firmware tampering and unauthorized modification of access-control logic. The Harvard architecture's deterministic execution ensures consistent keypad debounce timing and reliable USART communication with the central controller. The commercial temperature grade suits indoor installations.
Recommandé
White Goods and Appliance Controllers
Washing machines, dishwashers, ovens, and other white goods use the PIC17C762-16/PT as the main controller, leveraging 66 I/O pins to drive 7-segment displays, control panel keypads, triac-fired heater outputs, and motor relays. The 10-bit ADC reads water-level, temperature, and motor-current sensors for closed-loop control. The Harvard RISC core's deterministic execution ensures safe appliance sequencing, and OTP memory locks appliance firmware against field modification. The 33 MHz clock provides responsive user-interface update rates.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C762-16/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C762-16I/PT | PIC17C762-16E/PT | PIC17C762T-16I/PT | PIC17C762T-16/PT |
|---|---|---|---|---|---|
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Program Memory Size | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM Size | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| Operating Temperature | 0C to +70C | -40C to +85C | -40C to +125C | -40C to +85C | 0C to +70C |
| Maximum Clock | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz |
| Number of I/O Pins | 66 | 66 | 66 | 66 | 66 |
| A/D Converter | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Highest pin count and I/O count in the PIC17C family for panel/control designs (vs PIC17C756A-16I/PT)
- Industrial and extended temperature variants available with same die (vs PIC16LF877A-I/PT)
- Mature 8-bit architecture with extensive legacy code base (vs PIC18F8520 (recommended migration))
Notes de conception
PIC17C762-16/PT uses OTP (One-Time-Programmable) EPROM, not flash memory. Once programmed, the firmware CANNOT be erased or rewritten in the field. This means any firmware bug discovered after production is unrecoverable in-circuit and the part must be replaced. Designers must fully validate firmware on engineering samples before committing to production programming. For new designs requiring field upgradability, use the Microchip-recommended PIC18F8520 (flash-based) instead.
PIC17C762-16/PT requires a regulated 4.5 V to 5.5 V supply with adequate decoupling. Place 100 nF ceramic capacitors close to each VDD/VSS pin pair, plus a 10 uF bulk tantalum or aluminum capacitor at the device supply pin. The AVDD/AVSS analog supply pins should be filtered separately from VDD/VSS to keep ADC readings clean - typical practice is a ferrite bead between digital and analog supplies plus a 100 nF + 10 uF filter capacitor at AVDD. In-circuit Serial Programming (ICSP) requires the VPP pin to be driven to ~13V during programming.
Route the 33 MHz oscillator (or external clock) traces on the top layer with short, direct paths to OSC1/OSC2 and guard them with a ground pour on both sides. Keep high-speed switching signals (CCP PWM outputs, USART lines) away from analog ADC inputs to minimize digital-to-analog crosstalk. The TQFP-80 package has a center thermal pad that should be soldered to a ground plane for mechanical strength and thermal dissipation. Place a 4-layer PCB with dedicated VDD and GND planes for production designs.
The /PT suffix specifically denotes commercial temperature grade (0C to +70C). For industrial applications, use /I/PT or /E/PT suffixes. Always check the operating-temperature marking on the chip against your application's environmental requirements. Mixing commercial parts into industrial designs is a common reliability failure that is often diagnosed only after field failures occur. Also verify pin 1 orientation - the TQFP-80 dot/notch indicator must be correctly aligned to avoid reversed mounting.
Informations de conformité
PIC17C762-16/PT was released before RoHS lead-free mandates were in force and uses lead-containing solder finish. Not RoHS compliant; not suitable for new designs requiring RoHS. AEC-Q100 automotive qualification not available. Reach compliant per standard Microchip declarations.
